PEP-II Status.

Sullivan, M. ; Bertsche, K. ; Browne, M. ; Cai, Y. ; Himel, T.

Technical Information Center Oak Ridge Tennessee

关键词: PEP storage rings;    Accelerators;    Design;    Electrons;    Feedback;   

RP-ID  :  DE2008935317

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

PEP-II and BaBar have just finished run 7, the last run of the SLAC B-factory. PEP-II was one of the few high-current e+e- colliding accelerators and holds the present world record for stored electrons and stored positrons. It has stored 2.07 A of electrons, nearly 3 times the design current of 0.75 A and it has stored 3.21 A of positrons, 1.5 times more than the design current of 2.14 A. High-current beams require careful design of several systems. The feedback systems that control instabilities, the RF system stability loops, and especially the vacuum systems have to handle the higher power demands. We present here some of the accomplishments of the PEP-II accelerator and some of the problems we encountered while running high-current beams.